Operation and Maintenance Manual - Gasdetectorsusa.com · 95/TX Operation & Maintenance Manual, Revision 1.0 Page 5 1 SAFETY INFORMATION Important – Read Before Installation Users

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Operation and Maintenance Manual

95/TX Wireless Alarm Station & Repeater

- 832-615-3588

mailto:[email protected]

95/TX Operation & Maintenance Manual, Revision 1.0

Page 2

CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED

PERSONNEL ONLY. READ AND UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING

OR SERVICING.

ATTENTION: POUR DES RAISONS DE SÉCURITÉ, CET ÉQUIPEMENT DOIT ÊTRE UTILISÉ, ENTRETENU ET

RÉPARÉ UNIQUEMENT PAR UN PERSONNEL QUALIFIÉ. ÉTUDIER LE MANUE D’INSTRUCTIONS EN ENTIER

AVANT D’UTILISER, D’ENTRETENIR OU DE RÉPARER L’ÉQUIPEMENT.

REVISION HISTORY

Revision 1.0 3/1/14 Initial Release

Copyright © 2014 GDS Corp. All Rights Reserved P/N 1200-0739-01


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CONTENTS

1 SAFETY INFORMATION _______________________________________________ 5

FOR YOUR SAFETY __________________________________________________________________ 5

WARRANTY _______________________________________________________________________ 5

IF YOU HAVE QUESTIONS ____________________________________________________________ 5

2 GDS CORP WIRELESS SYSTEM OVERVIEW ________________________________ 6

GDS Corp Wireless Devices ___________________________________________________________ 7

Key Features_______________________________________________________________________ 8

3 95/TX HARDWARE ___________________________________________________ 9

4 INSTALLATION _____________________________________________________ 11

Choosing a Location ________________________________________________________________ 11

Power and Signal Wiring ____________________________________________________________ 13

Antenna selection _________________________________________________________________ 14

5 SETUP & OPERATION ________________________________________________ 17

User Interface ____________________________________________________________________ 17

Network Setup ____________________________________________________________________ 18

Channel Setup ____________________________________________________________________ 19

Alarm Device Setup ________________________________________________________________ 19

6 TROUBLESHOOTING GUIDE ___________________________________________ 20

7 USER MENUS ______________________________________________________ 21

8 SPECIFICATIONS ____________________________________________________ 26

9 SPARE PARTS ______________________________________________________ 27

10 DRAWINGS AND DIMENSIONS ______________________________________ 28

11 NETWORK SETTINGS ______________________________________________ 31

12 WIRELESS SYSTEM SETUP CHECKLIST _________________________________ 32

13 WIRELESS RANGE CALCULATIONS ____________________________________ 33


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TABLE OF FIGURES

FIGURE 2-1: GDS CORP WIRELESS GAS DETECTION SYSTEM .......................................................................... 6

FIGURE 3-1: 95/TX SINGLE ENCLOSURE CONFIGURATION ............................................................................. 9

FIGURE 3-2: 95/TX ALARM STATION / REPEATER WITH LOCAL STROBE & HORN .......................................... 9

FIGURE 3-3: 95/TX ALARM STATION / REPEATER WITH RATED HORN & STROBE ....................................... 10

FIGURE 3-4: 95/TX WITH REMOTE LIGHT STACK (PRELIMINARY) ................................................................ 10

FIGURE 4-1: DC POWER INPUT WIRING ....................................................................................................... 13

FIGURE 4-2: AC POWER INPUT WIRING ....................................................................................................... 13

FIGURE 4-3: 95/TX ALARM RELAY CONNECTIONS ........................................................................................ 14

FIGURE 4-4: YAGI DIRECTIONAL ANTENNA .................................................................................................. 15

FIGURE 5-1: 95/TX DISPLAY .......................................................................................................................... 17

FIGURE 7-1: 95/TX MAIN MENU TREE .......................................................................................................... 21

FIGURE 7-2: CHANNEL CONFIGURATION MENU .......................................................................................... 22

FIGURE 7-3: SYSTEM CONFIGURATION MENU ............................................................................................. 23

FIGURE 7-4: COMMUNICATIONS MENU ...................................................................................................... 24

FIGURE 7-5: SYSTEM SECURITY MENU ......................................................................................................... 25

FIGURE 7-6: TECHNICIANS ONLY MENU ....................................................................................................... 25

FIGURE 9-1: 95/TX SPARE PARTS .................................................................................................................. 27

FIGURE 10-1: 95/TX DIMENSIONS (DC, STROBE ONLY) ................................................................................ 28

FIGURE 10-2: 95/TX DIMENSIONS (AC, NR HORN + STROBE) ....................................................................... 29

FIGURE 10-3: 95/TX DIMENSIONS (XP HORN + STROBE) .............................................................................. 30

FIGURE 11-1: GDS CORP NETWORK SETTINGS ............................................................................................. 31

FIGURE 12-1: STEP-BY-STEP WIRELESS SETUP CHECKLIST ............................................................................ 32

FIGURE 13-1: RF TRANSMISSION MARGIN ................................................................................................... 33

FIGURE 13-2: RF TRANSMISSION ZONE ........................................................................................................ 34


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1 SAFETY INFORMATION

Important – Read Before Installation Users should have a detailed understanding of 95/TX operating and maintenance instructions. Use the

95/TX only as specified in this manual or detection of gases and the resulting protection provided may be

impaired. Read the following WARNINGS prior to use.

FOR YOUR SAFETY

• The 95/TX wireless alarm station described in this manual must be installed, operated and

maintained in accordance with information contained herein. Installation in any hazardous area

must comply with all applicable restrictions, requirements and guidelines for said hazardous

areas. It is the end user customer’s final decision to ensure that the 95/TX is suitable for the

intended use.

• Do not operate the 95/TX if its enclosure is damaged or cracked or has missing components.

Make sure the cover, internal PCB’s and field wiring are securely in place before applying power.

• Do not expose the 95/TX to electrical shock or continuous severe mechanical shock. Protect the

95/TX and related assemblies from dripping liquids and high power sprays.

• Periodically test for correct operation

• Use only for applications described within this manual.

WARRANTY

GDS Corp. hardware products carry a 2-year limited repair or replacement warranty on electronics and

workmanship. GDS Corp. reserves the right to void warranty claims based on evidence of misuse, abuse,

or the misapplication of a specific sensor in an environment known to adversely affect sensor life.

Warranty period starts on date of shipment from GDS Corp.

IF YOU HAVE QUESTIONS

Please contact us at:

GDS Corp

2513 FM 646 Road North, Santa Fe, Texas, 77510

409-927-2980 (Office), 409-927-4180 (Fax)

[email protected]

www.gdscorp.com


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2 GDS CORP WIRELESS SYSTEM OVERVIEW

The new GDS Corp TX-Series wide-area Wireless Gas Detection System incorporates a wealth of new

features and capabilities that make installation, setup and operation easier and faster and provides the

best in wireless personnel safety and equipment protection.

The system consists of a C2/TX Wireless Site Manager 32-point controller with WiFi, MODBUS satellite or

cellular connectivity, one or more GASMAX/TX single or dual channel battery-operated wireless gas

detectors for toxic and combustible gases and one or more 95/TX Wireless Alarm Station / Repeaters that

allow highly visible strobes or horns to be placed in locations such as gates, guard shacks or worker’s

quarters where timely indication of hazardous conditions can reduce injuries or save lives.

Figure 2-1: GDS Corp Wireless Gas Detection System

GM/TX Wireless Gas Monitors

C2/TX Wireless Site Manager with Data Logging

95/TX Wireless Alarm Stations

Remote MODBUS Master Wired or Wireless Link

Local WiFi Network to

Smartphones or Tablets

Satellite or Cellular Remote Monitoring

Worldwide

Text Alarms & Alerts via Smartphone

Network Website Dashboard Monitor


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ALARM STATUS CLEAR

GDS CORP WIRELESS DEVICES

GASMAX/TX GAS MONITOR (GM/TX)

The battery-powered single or dual channel GASMAX/TX monitor uses the latest in ultra-

low power infrared or electrochemical sensors to sample the ambient air every six

seconds for toxic or combustibles gases. If gas is present, a gas data packet containing

level and alarm data is transmitted to any active listener device. A user programmable

‘wake-up timer’ guarantees that even if gas is not present, a transmission will occur on

predetermined intervals to notify the C2/TX controller that the detector is present and

working. For more information on the GASMAX/TX monitor see the GASMAX/TX Users

Guide (P/N 1200-0863).

C2/TX WIRELESS SITE MANGER (C2/TX)

The C2/TX Wireless Site Manager listens for broadcast gas data packets and verifies that

transmissions are being received from all active channels. If an alarm condition exists,

the C2/TX activates local warning devices and updates its MODBUS database. An

optional cellular or satellite remote access system reads changes in the MODBUS

database and transmits alarm information to a cloud server which, in turn, sends

text messages or email warnings and alerts. The C2/TX also acts as the Beacon

Server for the entire system, transmitting a broadcast signal that all radios use to

synchronize their transmissions. For more information on the C2/TX Wireless Site

Manager, see the C2/TX Users Guide (P/N 1200-0866).

95/TX WIRELESS ALARM STATION (95/TX)

The 95/TX Wireless Alarm Station also listens for gas data packets broadcast by

GASMAX/TX monitors and activates local horns or strobes if an alarm condition

exists. In addition, the 95/TX can also be programmed to retransmit (“repeat”)

each received gas data packet. Finally, if required by network topology, a 95/TX

alarm station can be programmed to act as the Beacon Server for the network.

This might be appropriate if the 95/TX is mounted on a pole or other ‘high point’

that provides better line-of-sight communications with all GASMAX/TX monitors,

C2/TX controllers and other 95/TX alarm stations. This manual contains information on the 95/TX

Wireless Alarm Station.


Page 8

KEY FEATURES

BATTERY-POWERED COMBUSTIBLE MONITORS

In addition to standard low-power electrochemical sensors, the new GASMAX/TX supports an ultra-low

power infrared detector for methane, propane, general hydrocarbons as well as carbon dioxide gas. Dual-

channel GASMAX/TX monitors can be configured to measure both combustible and toxic hydrogen sulfide

gases with no external source of power.

LISTENER DEVICE AUTO-CONFIGURATION

Each GASMAX/TX gas monitor periodically broadcasts a config data packet that contains information on

tag name, engineering units, zero and span values, alarm levels and other user-adjustable settings. When

a C2/TX site manager or 95/TX alarm station receives a config data packet, setup information in the

GASMAX/TX is automatically loaded into the listener’s channel information database. This makes it

unnecessary to independently program listener devices, and allows them to announce alarms using

customer-recognizable tag names such as “North Fence” or “Drillers Shack” previously programmed into

the individual GASMAX/TX monitor.

REMOTE ACCESS

The C2/TX Wireless Site Manager can be optionally configured for satellite or cellular remote access

packages. These packages include a dedicated satellite or cellular modem with optional GPS receiver,

antenna cable, lightning arrestor and antenna, and are custom programmed to query the C2/TX Modbus

database and transmit alarm and event data to network-based servers that display the information on a

“dashboard” display. Users can setup the dashboard to automatically generate emails, text messages or

cellular phone calls in the event of a gas alarm or maintenance event.

ADVANCED RF TECHNOLOGY

GDS Corp wireless products use 900 MHz or 2.4 GHz RF modems based on Frequency Hopping Spread

Spectrum (FHSS) technology. FHSS radios offers longer range and higher power than those found in typical

mesh networks. In the United States, Canada and selected other countries, 900 MHz is recommended due

to increased power output available (up to 1 watt), greater range and ability of lower frequency signals to

travel around interfering objects. Systems utilizing 2.4 GHz are license-free in most areas of the world and

tend to be less susceptible to interference from existing radio frequency sources.


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3 95/TX HARDWARE

The GDS Corp 95/TX Wireless Alarm Station is available in a number of different configurations that

include rated and non-rated horns and strobes as well as remote two, three or four strobe light stacks

with optional horn sounder. Dimensions and mounting recommendations are shown in Appendix X.

The 95/TX repeater-only or repeater plus strobe configuration includes a single NEMA 7 enclosure as

shown in Fig 3-1. DC input power can range from +12 to +30VDC.

Figure 3-1: 95/TX Single Enclosure Configuration

If the 95/TX configuration includes an AC power supply or horn sounder, the device is configured using

two NEMA 7 enclosures as shown in Fig 3-2. The optional AC power supply is located in the left-side

enclosure. Input power is limited to +12VDC, +24VDC or 110/220VAC only.

Figure 3-2: 95/TX Alarm Station / Repeater with Local Strobe & Horn

95/TX configured for

repeater function only (+12-30 VDC)

95/TX configured for repeater with

local strobe (+12-30 VDC)

DC Power Input

AC or DC Power Input

95/TX configured

with local NR strobe and

horn (+12 VDC,

+24 VDC or 110/220 VAC)

Strobe colors include:

RED YELLOW

BLUE PURPLE


RED YELLOW

BLUE PURPLE


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Figure 3-3 shows the same configuration with Class 1 Division 2 rated strobe and Class 1 Division 2 rated

horn. Input power is limited to +12VDC, +24VDC or 110/220VAC only.

Figure 3-3: 95/TX Alarm Station / Repeater with Rated Horn & Strobe

The 95/TX Alarm Station / Repeater is also available with remote two strobe, two strobe plus horn, three

strobe and three strobe plus horn combinations (See Figure 3-4). Contact GDS Corp for more details.

Figure 3-4: 95/TX with Remote Light Stack (Preliminary)

AC or DC Power Input

DC Power Input

95/TX configured with local rated strobe and horn

(+12 VDC, +24 VDC or

110/220 VAC)


RED YELLOW

BLUE PURPLE


RED YELLOW

BLUE PURPLE


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4 INSTALLATION

CHOOSING A LOCATION

The most important role of an Alarm Station is to provide real-time

warning of hazardous conditions that may be present in the vicinity.

As a result, it is important to install the 95/TX such that the strobe

and/or warning horn provide maximum coverage for the warning area.

At the same time, consideration must be given to the following

conditions: 1) ability to receive gas data packets from all GASMAX/TX

wireless gas detectors; 2) access to a continuous source of AC or DC

power, and 3) maintaining a minimum distance between the antenna

and closest metallic object, or any object that creates RF interference

such as high voltage power lines or large sodium or mercury vapor

lamps. The minimum spacing distance is determined by the RF

frequency chosen and is shown below.

MOUNTING THE 95/TX (Single Enclosure)

The 95/TX standard enclosure is a single cast aluminum explosion-proof

(NEMA 7) enclosure that has two 0.27” diameter mounting holes spaced

5.0” apart. If a local strobe is attached, the strobe body extends 0.5”

behind the plane of the enclosure. If the 95/TX is to be mounted on a flat

plate, then spacers must be installed between the enclosure mounting

holes and the plate to allow for clearance between the strobe and

backplate. Furthermore, if the 95/TX is plate-mounted, the plate should

be designed such that the antenna extends above the plate into free

space. Power to the unit should be brought through the left-hand side

¾” NPT threaded opening using an appropriate fitting (not provided).

For pole mount applications, GDS Corp offers a pole mounting kit

(P/N 20-0165) that contains a pre-drilled plate, stainless steel mounting

bolts and two stainless steel U-bolt assemblies. The pole mounting kit

supports poles up to 2.0” in diameter.

Distance from antenna to nearest metallic surface: 900 MHz => 24” Minimum 2.4 GHz => 6” Minimum

Distance above ground: 6’ / 2m recommended

5.0”

9.5”


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In all cases, the 95/TX enclosure must be properly connected to earth

ground to maximize radio reception and as protection against electrical

discharge and lightning strikes.

MOUNTING THE 95/TX (Dual Enclosure)

If the 95/TX configuration includes either a horn or AC power supply,

the unit consists of two enclosures mounted side by side as shown at

right. There are four 0.27” diameter mounting holes spaced as shown.

The optional AC supply is always mounted in the left-hand side

enclosure and AC or DC power enters through the lower left side ¾”

NPT threaded opening using an appropriate fitting (not provided).

Both the horn and strobe extend rearward past the plane of the

mounting holes by 0.5” so if the unit is to be plate mounted, then

appropriate spacers must be installed between the enclosure

mounting holes and plate to allow for clearance between the

backplate and strobe and horn. If mounting the unit on a plate, be sure

that the antenna extends above the plate into free space.

The dual-enclosure unit can also be mounted using the

p/n 20-0165 pole-mounting kit as shown at right. For best

protection against lightning or electrical discharge, make

sure the pole is buried at least 3’ into the ground or is

properly bonded to earth ground using large diameter

wire or braided cable. If the pole extends above the level

of the antenna as shown, the pole will provide some

additional protection against direct lightning strikes.

5.0”

6.0”

17”


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POWER AND SIGNAL WIRING

DC POWER

When using a source of 24VDC, the power and ground connections are made to the right-hand side

terminal block (TB1) on the 95/TX I/O power supply board located in the back of the enclosure.

Figure 4-1: DC Power Input Wiring

AC POWER

When using a source of AC power, the line, neutral and earth ground connections are made to AC power

supply located in the left-hand side enclosure. A cable gland is provided to run the power wiring out the

lower left side enclosure opening.

Figure 4-2: AC Power Input Wiring

- +12-30 VDC Input TB1

Line Neutral Ground


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CONNECTING ALARM DEVICES

The 95/TX provides three SPDT alarm relay outputs and one dedicated fault relay output. Terminals are

labeled “NO” (normally open), “NC” (normally closed) and “C” (common) and are located on the power

supply board located in the back of the enclosure. The power supply board also provides contacts for a

remote “alarm acknowledge” button. Power for 24V strobes or horns can be taken from spare “+” and “-“

pins on TB1.

Figure 4-3: 95/TX Alarm Relay Connections

ANTENNA SELECTION

MONOPOLE AND COLLINEAR OMNI-DIRECTIONAL ANTENNAS

The 95/TX Wireless Alarm Station includes a standard “rubber duck” omnidirectional antenna. “Omni”

antennas are the most commonly used antenna for portable and semi-portable equipment. When

mounted vertically, they provide good all-around (“omnidirectional”) reception and transmission from

horizontal directions, and are generally rugged and when sealed properly against moisture can provide

years of quality service.

The 95/TX is also available with a flexible omnidirectional antenna that is more resistant to damage in

field applications. The flexible antenna offers the same gain and reception pattern.

Collinear antennas are similar in appearance to ‘rubber duck’ antennas, but are more sophisticated and

combine several vertical antennas that operate in parallel to increase signal gain by focusing the reception

pattern in a more horizontal plane. Collinear antennas should be used where additional signal gain is

required.

Fault Relay

Relay 3

Relay 2

Relay 1


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YAGI DIRECTIONAL ANTENNAS

Yagi antennas are directional along the central beam of the antenna. The folded element is towards the

back and the antenna should be “pointed” in the direction of the transmission. Yagi antennas should also

be mounted with at least 2-3’ of clearance from other objects. Mount the Yagi antenna as shown for

maximum RF transfer.

Figure 4-4: Yagi Directional Antenna

In networks spread over wide areas, it is common for a central receiver / controller to have an omni-

directional antenna (such as a collinear) and the remote GAMAX/TX monitor to have Yagi directional

antennas. Care should to be taken to ensure the Yagi is aligned correctly to achieve optimum

performance.

COAXIAL CABLES

When installing a coaxial cable between the 95/TX and a remote antenna, constructing a loop of cable

below the antenna is always recommended. The loop allows water to drip off the bottom of the U

instead of into the connection, reduces installation strain and provides spare cable length in case later the

original connectors need to be replaced.

Avoid installing coax cables together in long parallel paths. Leakage from one cable to another has a

similar effect as mounting an antenna near another antenna.

SURGE PROTECTION & GROUNDING

Voltage surges primarily enter the 95/TX Alarm Station via the antenna connection as a result of electrical

discharge in the atmosphere. Electrical energy follows the most direct path to earth and the best

protection is achieved by “draining” the surge energy to earth via an effective earth ground. Wireless

Always mount Yagi antennas with the primary elements oriented in the same

direction as any omnidirectional antennas in the same system


Page 16

devices should have a solid connection to earth via a ground stake or ground grid if the soil has poor

conductivity. Solid connection means a large capacity conductor (not a small wire) with no coils or sharp

bends. All other devices connected to the 95/TX, such as remote strobes or horns, should be grounded to

the same ground point if possible. There can be significant resistance between different ground points

leading to very large voltage differences during lightning activity.

It is very difficult to protect against direct lightning strikes but the probability of a direct strike at any one

location is very small. Unfortunately, power line surges and electromagnetic energy in the air can induce

high voltage surges from lightning activity several miles away.

SEALING ANTENNA AND CABLE FITTINGS

If a coax cable connects to the antenna via connectors, it is very important to weatherproof the

connection using #1000-2314 or equivalent sealing tape. Moisture ingress into a coax cable connection is

the most common cause of problems with antenna installations. A three layer sealing process is

recommended – an initial layer of electrical PVC tape, followed by a second layer of self-vulcanizing

weatherproofing tape (#1000-2314), with a final layer of electrical PVC tape.

USE IN HAZARDOUS AREAS

The 95/TX enclosure is certified for use in Class 1 Division 1 hazardous areas. The standard 10-0295

antenna coupler is designed to meet Class I Division 2 hazardous area standards but is not 3rd party

certified.


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5 SETUP & OPERATION

USER INTERFACE

There are four magnetic switches on the face of the 95/TX, arranged in a quadrant around the LCD

display labeled “NEXT”, “EDIT”, “DOWN/TEST” and “UP/ACK”. To activate, or “press” a magnetic switch,

swipe the magnet near the switch. To access the Main Menu, press the “EDIT” key. While in the menu

display, use the UP and DOWN keys to select an item, EDIT to change an item, and NEXT to exit the menu.

NOTE: HOLDING A MAGNET OVER THE DN/TEST KEY WILL ACTIVATE (TEST) ALL ALARM RELAYS

When power is applied to the 95/TX, the display will show one of two messages – “Alarm Status Clear” if

the 95/TX has identified and locked onto the network beacon, or “No Server Found”, indicating that the

beacon signal is either too weak OR the network selection (“A” through “Z”) is not programmed to match

the current network.

Figure 5-1: 95/TX Display

Once programming is complete and the beacon server is ‘in range’, the “Alarm Status Clear’ message will

be displayed until an alarm event occurs. This includes both gas alarms as well as communications errors

caused by missing gas data packet information.

An icon on the right-hand side of the screen indicates the status of the beacon server and can be useful

when troubleshooting network issues:

Beacon in Range Normal Operation

Beacon Not in Range Check network settings

Beacon In Range but was previously lost: Intermittent beacon signal; check network

S E R V E R

95/TX configured as only network beacon server


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NETWORK SETUP

Integrating the 95/TX Wireless Alarm Station into a GDS Corp network requires adjustment of the

following network device settings. Systems shipped from GDS Corp will already have these settings pre-

programmed.

NETWORK ID

All devices on a single GDS Corp wireless network must share the same Network ID. The Network ID

parameter combines the definition of a unique “System ID”, the selection of a set of operating

frequencies and the use (or not) of data encryption algorithms when transmitting and receiving data. See

Chapter 12 for a complete definition of network parameters defined by each Network ID. Data

transmission on networks “A” through “L” are non-encrypted, while data transmission on networks “M”

through “Z” are encrypted in software. There is no performance penalty associated with an encrypted

network selection.

To select the Network ID, press “EDIT” to access the main menu, and then select “Communications” and

“Network ID”. If the selected Network ID matches that programmed into the primary Beacon Server, the

“Alarm Status Clear” message will appear.

RF MODE

Mode determines if the 95/TX is defined as the “Beacon Server”. In any GDS Corp network, one device

acts as the beacon server, transmitting a continuous signal that allows each wireless device to synchronize

its own transmission while minimizing power consumption. If the 95/TX is set for “Client”, then no beacon

is transmitted; if set for “Server”, the 95/TX will broadcast the beacon signal.

NOTE: ONLY ONE DEVICE IN ANY GIVEN NETWORK SHOULD BE PROGRAMMED AS THE BEACON SERVER.

In some cases, it may be advantageous for a 95/TX to act as the beacon server, if the C2/TX controller is

mounted inside a building or structure and the 95/TX alarm station is mounted outside and above ground

level. In this case, a beacon transmitted by the 95/TX may have a better chance of reaching the remote

GASMAX/TX monitors. In this case, be sure that the C2/TX Client/Server setting is set to “Client”.

To select Client or Server, press “EDIT” to access the main menu, and then select “Communications” and

“RF Mode”. Remember, only one device in any given network should be set as the “Beacon Server”.


Page 19

RF POWER

Systems that operate on 900 MHz offer adjustable power levels, from 10 mW up to 1.0 Watt. Unless there

are other GASMAX/TX monitors located in close proximity to the 95/TX, GDS Corp recommends setting

the power level to 1.0 Watt.

To select the power level, press “EDIT” to access the main menu, and then select “Communications” and

“TX Power”. Power levels in systems that utilize 2.4 GHz radios cannot be adjusted.

CHANNEL SETUP

The next step after the 95/TX is successfully integrated into the wireless network is to setup the total

number of active channels and enable individual channels assigned to each remote GASMAX/TX gas

monitor.

ACTIVE CHANNELS

Set the total number of channels (From “1” to “32”) that the 95/TX needs to monitor by selecting “Edit”

followed by “System Config” and then “Active Channels”. Press “EDIT” to modify the setting.

INDIVIDUAL CHANNEL SETUP

Once the total number of channels is set, activate each channel that will be associated with an individual

GASMAX/TX gas monitor. You will need to know the Remote ID of each GASMAX/TX monitor. Dual

channel devices will have two device ID settings; this will allow the 95/TX to individually monitor and

alarm on each channel separately.

For each monitored channel, the 95/TX can be programmed to “repeat”, or re-broadcast each received

gas data packet. This is useful if the 95/TX is located between the GASMAX/TX monitor and C2/TX

controller, or if the gas data packet needs to be repeated to other 95/TX alarm stations located in remote

areas.

To enable a specific channel and set the Device ID and Repeat Packet parameters, press “EDIT” followed

by “Channel Config”.

ALARM DEVICE SETUP

Once the network and channel parameters are set properly, program each relay to activate based on

alarm data from specific channels. For more information on relay setup, see the User Menu section on

relays.

To program each relay, press “EDIT”, followed by “System Config” and then select “Relay Config”.


Page 20

6 TROUBLESHOOTING GUIDE

DISPLAY SCREEN SHOWS “NO SERVER FOUND”

• 95/TX located too far from beacon server; move closer

• 95/TX network ID not set to match network ID of primary beacon server; match Network IDs

• 95/TX antenna or antenna cable broken or damaged; repair or replace

• Radio type incorrect (using 900 MHz radio in 2.4 GHz network or vice-versa)

IN-RANGE ICON SHOWS DOTTED LINE

• Beacon server signal lost and regained; check communications

EVENT LOG SHOWS SINGLE CHANNEL IN COMM ERROR

• GASMAX/TX battery dead; replace battery

• GASMAX/TX too far from beacon server or too far from 95/TX; move closer

EVENT LOG SHOWS ALL CHANNELS IN COMM ERROR

• Network ID set incorrectly; check Network ID

• Beacon server unavailable; check device designated as beacon server

• Lightning strike on antenna or in vicinity; replace radio

CHANNEL SHOWS CONFIG PENDING

• This is normal – config data is broadcast by each GASMAX on 8 hour intervals. If condition

persists for more than 24 hours, check GASMAX/TX Wakeup Timer setting.

DISPLAY SCREEN BLANK

• DC power failed or too low

• AC power unavailable or AC power supply failure


Page 21

7 USER MENUS

The 95/TX Main Menu tree is shown below. To access the Main Menu, swipe the magnetic wand over the

EDIT key. Use the UP and DN keys to select an item and press EDIT. Use NEXT to exit a menu.

Figure 7-1: 95/TX Main Menu Tree

ALARM

STATUS CLEAR

SYSTEM CONFIGSYSTEM CONFIGSYSTEM CONFIGSYSTEM CONFIG Relay Config Active Channels 16 Contrast Relay Refresh 0m

TECHNICIANS MENUTECHNICIANS MENUTECHNICIANS MENUTECHNICIANS MENU

Relay Test

900 MHz Radio 900 MHz Radio 900 MHz Radio 900 MHz Radio

Network A

RF Mode CLIENT

TX Power 10mW

Server In Range

WaveNet Radio

SYSTEM SECURITYSYSTEM SECURITYSYSTEM SECURITYSYSTEM SECURITY Contact Name Pass Code xxxx UNLOCKED

CONTRASTCONTRASTCONTRASTCONTRAST UP/ DOWN to change Next to Exit

01 MEASUREMENT NAME01 MEASUREMENT NAME01 MEASUREMENT NAME01 MEASUREMENT NAME (Alarm 1)(Alarm 1)(Alarm 1)(Alarm 1) 02 MEASUREMENT NAME02 MEASUREMENT NAME02 MEASUREMENT NAME02 MEASUREMENT NAME (Alarm 1)(Alarm 1)(Alarm 1)(Alarm 1)

CHANNEL CONFIGCHANNEL CONFIGCHANNEL CONFIGCHANNEL CONFIG Select Channel 02 Channel Active YES Remote ID 02

Repeat Packet YES

MAIN MENUMAIN MENUMAIN MENUMAIN MENU

Channel Config

System Config Communications

Security

Technicians ONLY

Ver 1.00

RELAY CONFIGRELAY CONFIGRELAY CONFIGRELAY CONFIG Relay 1 Relay 1 Tag Name Trip On Alarm 1 Failsafe NO Acknowledge NO Select Channels

“EDIT”“EDIT”“EDIT”“EDIT”

Enter key sequence to access menu * * * * NEXT key to Exit

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

R L Y 1 A L 1

1 2 3 4 5 6 7 8

17 18 19 20 21 22 23 24

9 10 11 12 13 14 15 16

25 26 27 28 29 30 31 32

RELAY TESTRELAY TESTRELAY TESTRELAY TEST

Relay 1 OFF

Relay 2 OFF

Relay 3 OFF

Relay 4 OFF


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CHANNEL CONFIGURATION MENU

The Channel Configuration menu contains settings that are unique to each channel. There are two

channels and each menu contains identical entries.

Figure 7-2: Channel Configuration Menu

SELECT CHANNEL – Use the EDIT key to select the channel to configure.

NOTE: WHEN EDITING CHANNEL INFORMATION, MAKE SURE TO SELECT THE CORRECT CHANNEL MENU

BEFORE MAKING CHANGES.

CHANNEL ACTIVE – Set for YES if this channel is to be used to monitor a remote gas detector.

REMOTE ID – Set to match the Remote ID of the specific GASMAX/TX gas monitor associate with this

channel.

NOTE: ALTHOUGH NOT REQUIRED, GDS CORP RECOMMENDS MAINTAINING A 1:1 RELATIONSHIP

BETWEEN THE GASMAX/TX DEVICE ID AND 95/TX CHANNEL SELECTION. IN OTHER WORDS, IF THE

GASMAX / TX DEVICE ID IS 5, THEN ASSIGN THAT GASMAX/TX TO CHANNEL 5 ON THE 95/TX, EVEN IF

CHANNELS 2, 3 AND 4 ARE NOT USED.

REPEAT PACKET – Set for YES if the 95/TX should rebroadcast (“repeat”) the data packet received from

the assigned GASMAX/TX gas monitor. This is useful if the GASMAX/TX is located farther away from the

main controller. Default is “NO” and must be enabled if the repeat function is desired.

A “Comm Error Timeline” is shown in the bottom of the screen that indicates time since the last received

transmission for this channel. Each time a gas data packet is received, the upper arrow indicator is moved

to the far left, and then slowly moves to the right. If the arrow reaches the far right hand side of the

screen, a Comm Error is generated for this channel.

CHANNEL CONFIGCHANNEL CONFIGCHANNEL CONFIGCHANNEL CONFIG Select Channel 02 Channel Active YES Remote ID 02 Repeat Packet YES


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SYSTEM CONFIGURATION MENU

The System Configuration menu contains items that are system dependent.

Figure 7-3: System Configuration Menu

RELAY CONFIG – Relay config allows the user to assign specific relays to each channel.

RELAY N – selects the specific relay programming to modify.

RELAY N TAG NAME – Allows the user to assign a name to a specific relay. Examples include “Horn” or

“Red Strobe”.

TRIP ON – Assigns the relay to one of several alarm events: “Alarm 1”, “Alarm 2”, “Alarm 3”,

“Fault/Comm” or “Any Alarm”.

FAILSAFE – Activates the relay in ‘no-alarm’ conditions such that the relay drops out when the alarm

occurs. Use caution when setting relays for FAILSAFE if unit is running on solar or battery power.

ACKNOWLEDGE – Clears the alarm relay condition if the UP/ACK button is pressed.

NOTE: WHEN EDITING RELAY INFORMATION, MAKE SURE TO SELECT THE CORRECT RELAY MENU BEFORE

MAKING CHANGES.

ACTIVE CHANNELS - Sets the total number of channels available. Setting this number to match the total

number of gas detectors in a system minimizes the need to configure unused channels.

CONTRAST - Select the LCD contrast command and use the UP or DOWN to adjust the contrast of the LCD

display.

RELAY REFRESH – Sets the time interval between required alarm acknowledge actions. In other words, if

an alarm occurs and is acknowledged, and the condition persists for the programmed period of time, the

alarm relay will be reactivated and will require another ACK. Setting Relay Refresh to “0” disables this

feature.

SYSTEM CONFIGSYSTEM CONFIGSYSTEM CONFIGSYSTEM CONFIG Relay Config Active Channels 16 Contrast Relay Refresh 0m

RELAY CONFIGRELAY CONFIGRELAY CONFIGRELAY CONFIG Relay 1 Relay 1 Tag Name Trip On Alarm 1 Failsafe NO Acknowledge NO Select Channels

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

R L Y 1 A L 1

1 2 3 4 5 6 7 8

17 18 19 20 21 22 23 24

9 10 11 12 13 14 15 16

25 26 27 28 29 30 31 32

CONTRASTCONTRASTCONTRASTCONTRAST UP/ DOWN to change Next to Exit


Page 24

COMMUNICATIONS MENU

The Communications Menu is used to configure the radio modem in the 95/TX. There are two similar

menus, one for 900 MHz radios and another for 2.4 GHz radios.

Figure 7-4: Communications Menu

NETWORK ID - May be set from “A” through “Z” and assigns the pseudo-random radio frequency hopping

pattern and system identifier. A transmitter will not go In Range of or communicate with another

transmitter operating with a different Network Identifier. Different Network Identifiers can be used to

prevent radios in one network from listening to transmissions of another. Installations having more than

one Server network should also have different Network Identifiers for each network.

RF MODE - Determines if the device is configured to transmit the network beacon server (“SERVER”) or

listen for the network beacon from another device (“CLIENT”). Only one device in any network should be

programmed as a server.

TX POWER - Allows the user to adjust transmitter power levels if using a 900 MHz radio. Options are 10

milliwatts (mW), 200 mW, 400 mW and 1.0 Watt. Transmit power also affects the power level of the

beacon signal if the 95/TX is set as the ‘server’. Radios designed for 2.4 GHz are preset to 50 mW and

power level cannot be adjusted.

900 MHz Radio 900 MHz Radio 900 MHz Radio 900 MHz Radio

Network A

RF Mode CLIENT

TX Power 10mW

Server In Range

WaveNet Radio


Page 25

SYSTEMS SECURITY MENU

The System Security menu allows the user to program a four digit pass code, requiring an operator to

enter the pass code before altering any menu settings. The pass code locks the entire menu database.

Figure 7-5: System Security Menu

CONTACT NAME - A 12 character ASCII field that is available for displaying a phone # or name of a person

or contact who knows the Pass Code. Lost Pass Codes may be recovered by entering the locked security

menu and holding the UP key for 5 seconds. The 4-digit code appears near the bottom of the screen.

TECHNICIANS ONLY MENU

The Technician’s Only menu group contains a Relay Test function that allows the user to individually

activate each of the internal relays for test purposes. Select the desired relay and hit the EDIT key to

toggle the relay between OFF and ON.

Figure 7-6: Technicians Only Menu

The sequence to enter the Technician’s Only menu is four “UP” keys.

SYSTEM SECURITYSYSTEM SECURITYSYSTEM SECURITYSYSTEM SECURITY Contact Name Pass Code xxxx UNLOCKED

TECHNICIANS MENUTECHNICIANS MENUTECHNICIANS MENUTECHNICIANS MENU

Relay Test

Enter key sequence to access menu * * * * NEXT key to Exit

RELAY TESTRELAY TESTRELAY TESTRELAY TEST

Relay 1 OFF

Relay 2 OFF

Relay 3 OFF

Relay 4 OFF


Page 26

8 SPECIFICATIONS

Power +12-30VDC, +24VDC, +12VDC or 110/220VAC depending on configuration and peripherals. Radio and display require 3 watts maximum.

Display 64 x128 pixel LCD with engineering units, bargraph and 30-minute trend

Input Monitors up to 32 channels of wireless gas detection from GASMAX/TX wireless gas detectors. Supports GDS Corp networks “A” through “Z”

Output Four programmable SPDT relays and one dedicated fault SPDT relay. Relays are rated for 5A @ 110/220VAC or 24VDC.

Output Rebroadcasts wireless data packets (programmable on a per-channel basis)

RF Section (900 MHz)

Receiver sensitivity -100 dBm

Frequency range 902 to 928 MHZ.

Repeater function: User adjustable transmit power from 10 mW to 1.0 watt

RF Section (2.4 GHz)

Receiver sensitivity -100 dBm

Frequency range from 2.406 GHz to 2.435 GHz (network identifier A – R) and from 2.444 GHz to 2.472 GHz (network identifier S – Z)

Repeater function: Fixed transmit power of 50 mW.

Temperature Operating -40°C to +55°C

Memory On-board non-volatile memory retains all user settings

Housing Aluminum housing(s) with epoxy paint standard; #316 stainless steel optional

Dimensions See dimensional drawings in Chapter 10.

Approvals Enclosure CSA certified for Class I Division 1 hazardous areas

Warranty Two years on electronics


Page 27

9 SPARE PARTS

DISPLAY & ENCLOSURE

Figure 9-1: 95/TX Spare Parts

Display: 10-0404-R 95/TX Display (no radio) 1000-2188 900 MHz radio module 1000-2454 2.4 GHz radio module

Antenna & Fittings: 1000-2189 Antenna, 900 MHz Fixed 1000-2732 Antenna, 900 MHz Spring Base 1000-2300 Antenna, 2.4 GHz Fixed 1000-2733 Antenna, 2.4 GHz Spring Base 10-0295 Antenna coupler (RP-TNC)

Enclosure & Peripherals: 10-0160 95/TX Enclosure (Yellow) 12-0218 Strobe, Red (NR) 12-0219 Strobe, Amber (NR) 12-0761 Strobe, Blue (NR) 12-0833 Strobe, Purple (NR) 2000-0230 Horn, 24VDC 1200-0495 Power Supply, 110/220VAC

I/O Board: 10-0324 95/TX I/O (Four relays) 10-0425 95/TX I/O (Five relays)


Page 28

10 DRAWINGS AND DIMENSIONS

Figure 10-1: 95/TX Dimensions (DC, Strobe Only)

6.7”

5.0” 20” with 900 MHz rubber duck antenna

23” with 900 MHz flex antenna

20” with 2.4 GHz rubber duck antenna

23” with 2.4 GHz flex antenna


Page 29

Figure 10-2: 95/TX Dimensions (AC, NR Horn + Strobe)

6.0”

5.0”

20” with 900 MHz rubber duck antenna




13.0”


Page 30

Figure 10-3: 95/TX Dimensions (XP Horn + Strobe)

6.0”

5.0”

24” with 900 MHz rubber duck antenna




14.0”


Page 31

11 NETWORK SETTINGS

The set of Network Identifiers used by the 95/TX specify a combination of frequency hopping pattern,

frequency band, System ID value and whether or not the data is encrypted using a proprietary software-

based algorithm.

NETWORK ID

HOP PATTERN

System ID

Data Encrypted?

900 MHz Band

2.4 GHz Band

Compatible with previous generation?

A 1 1 No 902-928 MHz 2.402 - 2.478 GHz Yes B 2 2 No 902-928 MHz 2.402 - 2.478 GHz Yes C 3 3 No 902-928 MHz 2.402 - 2.478 GHz Yes D 4 4 No 902-928 MHz 2.402 - 2.478 GHz Yes E 5 5 No 902-928 MHz 2.402 - 2.478 GHz Yes F 6 6 No 902-928 MHz 2.402 - 2.478 GHz Yes G 7 7 No 902-928 MHz 2.402 - 2.478 GHz Yes H 8 8 No 902-928 MHz 2.402 - 2.478 GHz Yes I 9 9 No 902-928 MHz 2.402 - 2.478 GHz Yes J 10 10 No 902-928 MHz 2.402 - 2.478 GHz Yes K 11 11 No 902-928 MHz 2.402 - 2.478 GHz Yes L 12 12 No 902-928 MHz 2.402 - 2.478 GHz Yes

M 13 13 YES 902-928 MHz 2.402 - 2.478 GHz No N 14 14 YES 902-928 MHz 2.402 - 2.478 GHz No O 15 15 YES 902-928 MHz 2.402 - 2.478 GHz No P 16 16 YES 902-928 MHz 2.402 - 2.478 GHz No Q 17 17 YES 902-928 MHz 2.402 - 2.478 GHz No R 18 18 YES 902-928 MHz 2.402 - 2.478 GHz No S 19 19 YES 902-928 MHz 2.402 - 2.478 GHz No T 20 20 YES 902-928 MHz 2.402 - 2.478 GHz No U 21 21 YES 902-928 MHz 2.402 - 2.478 GHz No V 22 22 YES 902-928 MHz 2.402 - 2.478 GHz No W 23 23 YES 902-928 MHz 2.402 - 2.478 GHz No X 24 24 YES 902-928 MHz 2.402 - 2.478 GHz No Y 25 25 YES 902-928 MHz 2.402 - 2.478 GHz No Z 26 26 YES 902-928 MHz 2.402 - 2.478 GHz No

Figure 11-1: GDS Corp Network Settings


Page 32

12 WIRELESS SYSTEM SETUP CHECKLIST

Follow the sequence shown below to properly power-up a wireless gas detection system based on a single

C2/TX Wireless Site Manager, one or more GASMAX/TX Wireless Gas Monitors and one or more 95/TX

Wireless Alarm Stations.

STEP 1 Identify a central location for the C2/TX Wireless Site Manager. Install the C2/TX and remote ‘base station” antenna (if so equipped).

Install each GASMAX/TX Gas Monitor in a location where gas hazards may exist, and where the antenna is visible from the base station antenna (if possible). Do NOT install next to sources of RF interference such as high voltage power lines or mercury vapor lighting.

Install each 95/TX Wireless Alarm Station / Repeater in a location where alarm indication is needed, and where the antenna is visible from the base station antenna (if possible). Do NOT install next to sources of RF interference such as high voltage power lines or mercury vapor lighting.

STEP 2

Apply power to the C2/TX Wireless System Manager Select the desired network identifier (“A” through “Z”) and Select RF Mode = “Server” If using 900 MHz radios, set the desired transmit power output. One watt is recommended. Enable the desired number of wireless channels Program relays / warning devices associated with each channel.

STEP 3 Apply power to each 95/TX Alarm Station Select the network identifier (“A” through “Z”) to match the ID programmed into the C2/TX Select RF Mode = “Client” Enable the desired number of wireless channels Program repeater function for desired channels Verify “Server In Range” Program relays / warning devices associated with each channel.

STEP 4 Turn on each GASMAX/TX gas monitor by holding a magnet over UP/ON key for several seconds Select the network identifier (“A” through “Z”) to match the ID programmed into the C2/TX Configure the RTU # (device ID) for a unique value Program channel tag name (visible on C2/TX and 95/TX Hold a magnet over the UP key to force a gas packet transmission

STEP 5 Confirm reception of wireless transmissions and valid gas detector readings on the C2/TX Confirm reception of wireless transmissions on each 95/TX alarm station

STEP 6 Perform end-to-end test (apply gas, confirm alarms) using calibration or test gas

Figure 12-1: Step-by-Step Wireless Setup Checklist


Page 33

13 WIRELESS RANGE CALCULATIONS

In order for reliable wireless communication to occur, transmitter power output, antenna ‘gain’ and

receiver sensitivity must exceed the ‘loss’, or attenuation experienced by radio signals as they travel

between transmitter and receiver. RF signals experience two kinds of ‘loss’ as they travel through space.

“Free space loss” is due strictly to the fact that RF signals ‘spread out’ as they propagate from a single

point source. Additionally, RF signals experience loss as a result of interference and interaction with

buildings, trees, structures and other physical barriers.

This gain or loss is measured in decibel-milliwatts (dBm)

and is a function of both distance and frequency. An

estimate of free space loss for 900 MHz and 2.4 GHz is

shown at right.

EXAMPLE POINT TO POINT GAIN CALCULATION

In a typical 2.4 GHz system shown below, for example, the transmitter power output is +21 dBm, each

antenna provides an additional gain of +3 dBm and the receiver sensitivity allows reliable reception of a

signal at -95 dBm power. Therefore, the total system gain is 21+3+3-(-95) = 122 dBm.

Figure 13-1: RF Transmission Margin

Since a reliable system requires a gain margin of +20 dBm, this system will work acceptably if the total

free space loss is less than 102 dBm (122 dBm – 20 dBm). However, this theoretical calculation does not

take into account additional loses due to intervening structures or foliage.

WAYS TO MINIMIZE RF SIGNAL LOSS

One way to minimize free-space loss is to ensure that the combined height of the transmitter antenna and

receiver antenna exceeds the diameter of the “RF Transmission Zone” (see Fig. 13-2) and that at least 60%

RF Power +21 dBm

Antenna Gain = +3 dBm

Antenna Gain = +3 dBm

Receiver Sensitivity -95 dBm

Free Space Loss @ 900 MHz:

-71 dBm at 300 ft., -91 dBm at 3000 ft.

Free Space Loss @ 2.4 GHz:

-80 dBm at 300 ft., -100 dBm at 3000 ft.


Page 34

of the area inside the zone should be free of obstacles. Although both 900 MHz and 2.4 GHz signals can

travel around or through most towers or buildings, structures such as large metal tanks or solid metal

buildings may attenuate the signal to the point where reception is marginal.

Raising the antenna at either end of the path will improve signal strength and reduce transmission errors.

GDS Corp recommends placing any antenna at least 6 feet above the surrounding terrain, and even more

if possible. However, note that the standard antenna transmits its maximum signal strength in a relatively

flat ‘donut-shaped’ pattern which may affect the performance of 95/TX monitors located in close

proximity to an elevated C2/TX WSM or receiver/controller.

Figure 13-2: RF Transmission Zone

Combined Antenna Height Distance 900 MHz 2.4 GHz 100 Ft 10’ / 3m 6’ / 2m 500 Ft 22’ / 7m 15’ / 5m 1000 Ft 30’/ 10m 20’ / 6m 3000 Ft 54’ / 17m N/A

RF Transmission Zone

Documents

Operation and Maintenance Manual - Gasdetectorsusa.com · 95/TX Operation & Maintenance Manual, Revision 1.0 Page 5 1 SAFETY INFORMATION Important – Read Before Installation Users